Diffuse is a graphical tool for comparing and merging text files. It can work with many revision control systems as a diff viewer or merge tool. Diffuse is able to compare an arbitrary number of files side-by-side (n-way merge), and gives the user the ability to manually correct line matching and directly edit the files.

Bordeaux is a Wine GUI configuration manager that runs winelib applications. It also supports installation of third party utilities, installation of applications and games, and the ability to use custom configurations.

gtklick is a simple metronome with a GTK interface
and native JACK support. It offers four different sounds, arbitrary meters and beat patterns, and a speed trainer. It's possible to save profiles and restore them later.

BleachBit deletes junk to recover disk space and maintain privacy. It rids your system of old junk including cache, Internet history, temporary files, unused locale files (better than localepurge), logs, and cookies. Designed for Linux systems, it wipes clean 50 applications including Adobe Reader, Bash, Firefox, Flash, OpenOffice.org, Opera, Real Player, Skype, and more. It shreds files so that they cannot be recovered, and it wipes free disk space to hide insecurely deleted files. It offers both a simple PyGTK GUI and a command line interface for automation.

Omnitux aims to provide various educational activities based on multimedia elements (images, sounds, and text). Possible activity types are associations, puzzles, counting activities, etc. There is support for multiple languages and multiple screen resolutions (by using SVG vector graphic files and high quality bitmap files). Omnitux activities are described in XML files, so it is possible to create new activities without modifying the program.

NoStaples aims to be an HIG-compliant desktop
scanning application with an emphasis on
low-volume to medium-volume document archival for
small businesses and home offices. It is written
in Python using PyGTK and Glade with an eye
towards clear, intelligible code.

RAD menu is a standalone (wm-independent) ToEE-style radial menu implementation. It is PyGTK-based and is drawn on a shaped full-screen overlay window. It is totally customizable via a YAML-like config.

Rapid Photo Downloader is an application for professional and amateur photographers, designed for use on the Linux desktop. It can download photos and videos from multiple cameras, memory cards, and portable storage devices simultaneously. It provides many flexible, user-defined options for subfolder creation, photo and video renaming, and backup.

Edile is intended to be a basic but useful text editor for system administration and scripting purposes. It's something between a script and an application meant for quickly opening and viewing or editing files from the command line or piped from another process. Edile requires Python and PyGTK, and if you have GTKSourceView, it will use that. It has been tested on XP and Ubuntu.